JPH0213826Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a hydraulically controlled ball tap.

The inventor of this invention previously devised the following hydraulically controlled ball tap and filed the application as Utility Model Application No. 118175 of 1982. That is, in FIG. 1, a piston-shaped valve body 8 reciprocates within the valve cylinder 1 via a sealing material 6.
A hollow valve rod 11 that fits into the valve body 8 and moves into and out of contact with the valve body 8.
A lever 13 is provided which engages with the valve body 8 through an engagement piece 15 and moves the valve stem 11 up and down.A float 16 which moves up and down with the water level is attached to the other side of the lever 13. A communicating hole 7 is provided therein. By moving the valve stem 11 into and out of contact with the valve body 8, the amount of leakage discharged through the hollow part 10 is adjusted, and the pressure above the valve body 8 is appropriately controlled and the valve body can be easily operated. 8 is moved up and down to control the water flow 40. However, this device has the drawback that the hollow portion 10 is clogged with contaminants such as dirt and iron powder in the water flow, causing clogging and malfunction.

The object of the present invention is to provide a hydraulically controlled ball tap that can prevent contaminants in the water flow from clogging the hollow part of the valve stem, and can easily remove them even if they become clogged.

Referring to FIG. 2, reference numeral 1 denotes a valve cylinder. An annular valve seat 2 is protruded below the valve cylinder 1, and a valve port 3 is formed inside the annular valve seat 2. A connection port 4 with a water pipe (not shown) is screwed further below the valve port 3, and a discharge port 24 is provided on the side of the valve barrel 1. A valve cover 5 is attached above the valve cylinder 1,
A cover 23 is provided on the outside of the valve cylinder 1 across a passage 25, and guides water from the discharge port 24 downward to the outside. A sealing material 6 such as an O-ring is recessed in the valve cylinder 1, and a piston-shaped valve body 8 that reciprocates within the valve cylinder 1 is fitted through the sealing material 6. The valve body 8 reciprocates to open and close the valve port 3. The valve body 8 is provided with a communication hole 7 that communicates between the upper and lower sides. Further, a sealing material 12 is recessed in the valve lid 5, and this sealing material 1
A hollow valve stem 11 passes through the valve cover 5 through the valve 2 in a reciprocating manner and in a water-sealing manner. The valve stem 11 moves up and down and comes into contact with and separates from the flat part 26 on the valve body 8.
The end 27 of 1 is opened and closed. A thick walled portion 17 is provided on the upper part of the valve stem 11, and this thick walled portion 17 is pivotally connected to one side of a lever 13 via a shaft 18, and a float 16 is attached to the other side of this lever 13. It is being The lever 13 is pivotally supported by a support piece 19 via a shaft 22, and the support piece 19 is pivotally supported by a support base 20 fixed to the valve barrel 1 via a shaft 21. A rod 9 passes through the hollow portion 10 of the valve rod 11 so as to be reciprocally movable and to allow water to flow therethrough. This rod 9 is fixed to the valve body 8 by a threaded portion 28 and a nut 29. When it is necessary to prevent the valve stem 11 from coming off, a play 14 is provided above the stem 9 for reciprocating the valve stem 11 and the stem 9, and the engagement piece 15
Install.

FIG. 3 shows a case in which the engaging piece 15 is nut-shaped and the rod 9 is provided with a threaded portion 41 so that the engaging piece 15 can be freely attached and detached.

With the above configuration, in the illustrated state, water flowing from the connection port 4 flows through the discharge port 24 and the passage 25.
It is then released downward to the outside.

Next, when the water level rises, the float 16 rises, and the lever 13 pushes the valve stem 11 downward to lower the valve body 8. At this time, since the end portion 27 is closed, the valve body 8
The upper pressure does not leak to the outside and is therefore equal to the lower pressure flowing in from the communication hole 7. On the other hand, the lower outer edge of the valve body 8 is close to the discharge port 24, so the pressure is low;
Therefore, the force due to the pressure acting on the valve body 8 acts slightly downward. The valve body 8 is thus easily pushed down by the action of this pressure in addition to the float 16.

Next, when the water level falls, the float 16 descends and the valve rod 11 rises. At this time, the flat part 26 on the valve body 8
A gap is created between the valve body 8 and the end portion 27, and the pressure above the valve body 8 becomes lower than the pressure below it. Therefore, the valve body 8 is pushed up due to the pressure difference. That is, the valve port 3 is opened.

Since this water pressure controlled ball tap has the above-described configuration and operation, the valve stem 11 and the rod 9 reciprocate with each other due to the up and down movement of the water level and water surface waves, preventing contaminants in the water flow from entering the hollow part 10. Prevent clogging. Furthermore, even if the hollow part 10 becomes clogged with contaminants, the on-off valve on the upstream side of the water pipe is closed to stop water supply, and the lever 13 is manually moved up and down while holding down the rod 9. If so, the valve stem 11 and the rod 9 can reciprocate with each other to remove clogging in the hollow portion 10.

The hydraulically controlled ball tap of the present invention has the following advantages.

That is, since the rod 9 fixed to the valve body 8 penetrates into the hollow part 10 of the valve stem 11, the valve stem 11 and the rod 9 reciprocate and move into the hollow part 10 due to vertical movement of the water level or waves on the water surface. Prevents contaminants in the water stream from clogging. Moreover, even if it becomes clogged, it can be easily removed by moving the valve stem 11 up and down while holding down the rod 9.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing the water pressure controlled ball tap according to the earlier application, FIG. 2 is a partial sectional view showing the water pressure controlled ball tap according to the present invention, and FIG. It is a sectional view showing an embodiment. 1... Valve cylinder, 2... Annular valve seat, 3... Valve port, 4
... Connection port, 5 ... Valve cover, 6 ... Seal material, 7 ...
... Communication hole, 8 ... Valve body, 9 ... Rod, 10 ... Hollow part, 11 ... Valve stem, 12 ... Sealing material, 13 ...
Lever, 14...Play, 15...Engagement piece, 16...
... Float, 24 ... Discharge port, 27 ... End of valve rod 11.

Claims (1)

[Scope of utility model registration request] An annular valve seat 2 is protruded below the valve cylinder 1 to form a valve port 3, and a connection port 4 with a water pipe is further formed below.
A discharge port 24 is provided on the side of this valve cylinder 1.
A valve cover 5 is attached above, and a piston-shaped valve body 8 that reciprocates within the valve cylinder 1 is fitted through a sealing material 6 to open and close the valve port 3. A communication hole 7 is formed in the valve body 8. Further, a reciprocating hollow valve stem 11 is passed through the valve cover 5 in a water-sealing manner, and this valve stem 11 is inserted into the valve body 8.
The valve stem 11 is pivotally connected to one side of the lever 13 so that the end portion 27 can be opened and closed by approaching and separating it from the
In a hydraulically controlled ball tap with a float 16 attached to the other side of the lever 13, a rod 9 penetrates the hollow part 10 of the valve stem 11 so as to be able to reciprocate and allow water to pass therethrough, and this rod 9 is fixed to the valve body 8. Water pressure controlled ball tap.